Home / 420,617.75-580,430.52-229,594.23

Finding the Fourth Proportional to 420,617.75, 580,430.52 and 229,594.23

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Solution

The fourth proportional to 420,617.75, 580,430.52 and 229,594.23 is: 316,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,617.75 : 580,430.52 = 229,594.23 : x
  2. Step 2: Convert to fraction form
    420,617.75/580,430.52 = 229,594.23/x
  3. Step 3: Cross multiply
    420,617.75x = 580,430.52 × 229,594.23
  4. Step 4: Simplify right side
    420,617.75x = 133,263,498,307.90
  5. Step 5: Solve for x
    x = 133,263,498,307.90/420,617.75
  6. Step 6: Final answer
    x = 316,828.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.